PRAXIS 5005 Science ETS Practice Test
PRAXIS 5005 Science ETS Practice Test Protons are positively charged, and electrons are negatively charged. A neutral atom has the same number of protons and electrons. A neutral atom becomes a positive ion when it loses one or more electrons, resulting in the ion having more positive charges than negative charges. Which of the following best describes a galaxy? A.A small celestial body composed of ice B.A giant planet orbited by ten or more moons C.A collection of planets revolving around a star D.A large cluster of stars, dust, and gas Correct answer- D.A large cluster of stars, dust, and gas A galaxy is a system composed of many stars, dust, and gas, which is held together by gravitational attraction. An object is moving in a straight line at a constant speed. What will happen if a constant force is then applied to the object in the same direction in which the object is moving?
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